Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
020010excellentexcellent21excellent
010010excellentexcellent11excellent
00008excellentexcellent11excellent
230015excellentexcellent31excellent
220025goodexcellent51excellent
210041goodexcellent61excellent
200032goodexcellent51excellent
190029goodexcellent51excellent
180031goodexcellent51excellent
170023goodexcellent41excellent
160019excellentexcellent41excellent
150018excellentexcellent31excellent
140019excellentexcellent41excellent
130017excellentexcellent31excellent
120019excellentexcellent41excellent
110033goodexcellent61excellent
100064lightly pollutedexcellent101excellent
090084lightly pollutedexcellent111excellent
0800107moderately pollutedexcellent131excellent
0700142heavily pollutedexcellent151excellent
0600132moderately pollutedexcellent201excellent
0500119moderately pollutedgood221excellent
0400111moderately pollutedgood231excellent
0300102moderately pollutedgood241excellent